Mold for forming concrete structures.



RES.

APPLICATION FILED OCT. 7, 19I6- Patented July 17, 1917.

3 SHEETS-SHEET I w. c. F URRY. MOLD FOR FORMNG CONCRETE STRUCTURES}: I

APPLICATION FILED OCT- 7. IBIS.

Patented July 17, I91.

3 SHEETS-SHEET 2.

a-wuewliow WiLLlPcM C: FURRY W. C. FUHRY.

MOLD FOR FORMING CONCRETE STRUCTURES.

APPLICATION FILED OCT. 7. i916.

Patented. July 17, 191?.

a SHEETS--SHEET 3.

Ag ow -connecti on to provide for tively interlocking the mold SGClDlOIlSWltl'L WILLIAM C. FUR/RY, OF TECUMSEH, OKLAHOMA.

MOLD FOR FORMING CONCRETE STRUCTURES.

Specification of Letters Patent.

Application rues October 7, 1916. serial no. 124,395.

To all whom it may concern lie it known that 1, WILLIAM C. FURRY, a citizen of the United States, residing at Tecumseh, in the county of Pottawatomie and State of Oklahoma, have invented cer tain new and useful Improvements in Molds for Forming Concrete Structures, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to molds for forming concrete structures and particularly to molds formed of a series of units which may be adjusted to various positions and adapt ed to be used for forming various structures.

One general object of the invention is to provide a form or mold particularly adapted for molding culvertsor like structures and in this connection to so construct the mold that the culvert may be formed with a flat floor or crown having downwardly extending pairs of abutments at approximately right angles to the floor or at any other desired angle, or the sections so changed that arched culverts may be formed with any desired degree of curvature.

A further object is to so construct the units that they may be used for molding either straight or curved walls.

Still another object is to provide for ready engagement or parts of the mold or form from each other and for their ready adjustment and in this each other.

A. further object of the invention is to provide in connection with a plurality of pallets of like structure, a plurality of bracing units, each unit being so constructed that a plurality of faces are provided for the attachment of the pallets and each unit being further so constructed that the angular relation of the pallets to each other may be changed.

Other objects will appear in the course of the following description. 1

My invention is illustrated in the accompanying drawings, wherein-. Y

Figure 1 is a perspective view of one of the bracing units;

Fig. 2 is an elevation of the bracing unit shown. in Fig. 1, looking from the other side of the unit and showing in dotted lines an detachment of the several.

quickly and effecfor the next adjacent strip.

angular arrangement of the wings of the unit relative to each other;

Fig. 3 is a perspective view of the triangular wing of one unit;

Flg. 1s a perspective view of one of the connecting links of the unit;

Fig. 5 1s a sectlonal view on the line 5-5 of Fig. 2;

Fig. .6 1s a perspective view of two sets of pallets constituting lagging with the bracing units connected. to the upper endsof the Patented July 17, T917.

through a bracing unit'and a portion of the H lagging or pallet strips, showing the man ner in which the lagging is interlocked with the bracing units;

Fig. 9 is a fragmentary perspective view of a portion of the. lagging and its angle iron showing the locking device thereon;

Fig. 10 is an elevation showing my mold sections applied to the construction of a flat culvert;

Fig. 11 is a fragmentary top plan view of the construction shown in Fig. 10;

F1 12 1s a horizontal sectional view showing my devices as applied to the construction of a circular wall such as the wall of a tank or silo.

My improved moldingdevices consist of a series of pallet or lagging strips and-a series of bracing units to which the strips are attached and by which the strips are connected. The molding face or pallet of the mold is formed. by strips of sheet metal designated 10 (see Fig. 6) each strip (which.

may conveniently be about 8%, inches 1n width and 6 feet in length) being formed adjacent one margin with a flange 11 preferably formed. by a small angle iron, flange -12 ofwhichprojects slightly beyond the edge of the strip 10 so as to form a seat Each strip and the flange of the angle iron is cutaway as at 13"at its opposite edges and at a distance from its opposite endsto provide for engagement with the flanges of the bracing units which will now be described.

The lagging formed by the str1ps10 is the .1nemberse26 whichare angular in braced and held in proper position by a se ries ofi'bracing units, one of which is-shown in Fig. 1*. Each of. theseunits consists of a. main plate let which has parallel. upper and lower edges 15 and; 16, respectively, the edge 15 being shorter than the edge 16. The ends of the plate 14 are cut away, at an angle of to the edge 15 and divergently with r a ion! t ea the then extend at right'angles to the edge 15 as at 18 and then extend at right angles to the edges 17 and intersect the edge 16 as at 19. The upper edge 15 of, the plate 14 isformed with thelaterally projecting flange 2.0 and the plate let adjacent the end edges 18 is formedwith theculfved, slots21. The middle of the plate adjacent the edge 16 is formed with medially disposed doublekey hole slot 22 and above this slot and on each side thereof are formed the double key hole slots 23-. At the uppe edg f t e-p ate 1.4 at the jnnctionof the edge 15 with the edges 17 there are formed the perforated e ars.-2 -ft, the upper ends of these ears,as illustrated in E g-. v-,fb ng formed with seats25 for h reception of reinforcing rods. Pivot ally connected to, the ears 2 4 are the linking section, as shown, clearly int-Fig. 4t, and which are provided, at opposite ends. with the upwir fldly divergent ears27 which coact with the ears 24 and are connected thereto by bolts 28. The flanges29 of. these cars are adapted to lieflat against, the edges 17,. ofv the plate 14, as shownlin.fultlinesin Fig l. and in dotted lines Fig. 2 and pivotally connected to the. extremities of these linksare the triangular wing plates 30, these plateshaving I .theflangesBL and 32 disposed at rightangles to each other, and. to the planeof the plate. These flanges 31, a d. are formed with double keyhole. slots 33.. The plates. 14:, links. 26, and the wing,

plates-30, are also formed with slots 34 whosepurpose willvbe later stated arealsopnovided with keyhole slots. 35, ad jaeent the outer corner. ofjeach. plate, these slots, 35,, coacting; with the curved slots 21 or withthe slots23,as. will hQ eafter-appear. Preferably bolts. of the pattern shown in Fig. 5 areused for adjustably connecting thawing platesv 3O to,the. main plate 14. and

or e ac b y.

connecting the units to each other.

These bolts. are. designated. 3.6. and

e a .ch.bolt consistsof. a shank having a, head at, one end adaptedto, be inserted, through the keyheleslot andturned and: at its other endhifnrcated and formed, with. a cam lever. 3

For the purpose. of detachably connecting. thelagging strips. 10. tothe flanges 20 and 29 by meansof. the slots3-ft, eachof. the

flanges 1 adjacent thenotches orcut away portions 13 of. each lagging strip is provided with a sliding bolt (see Fig. 8), this as at 17. The. ends.

' Thetriangular wing plates 30.

bolt being designated 38. Each bolt is slotted; and through the slot passes a bolt 39 which, holds it in position. By means of these sliding bolts 38 the lagging strips may be interlocked with the bracing units in the manner illustrated in Fig. 8. I do not wish to belimited; to this means, however, of c011- necting the lagging strips 10 to the bracing units as. they may be bolted to the bracing units by ordinary bolts. I believe the construction illustrated in Fig. 8 to be preferable however, for one reason. above others that the.locking devices are below the level of" the concrete which is disposed upon or against the, lagging strips. and, therefore, there is no danger of'thesebolts interlocking with, the concrete.

With the lagging? strips as described and the units constructed as described it is. possibl'e toforma largevariety of concrete structures. ThusFig. 6 I" illustrate how these devicesanay be applied to constructing a straight wallj such as the wing wall of a culvert;, or the wall; of a house or other like s i iuctn e- In this case two sets of lagging strips are used, disposedl in spaced relation to each other and braced upon their outer faces by the unitscomposed of'the members 1et, 26 andj30. In this'casethe members 14: and are extended; so as to proximately straight surface bearing against the lagging strips and the flanges 31 of the wing s,.30 of; one unit are detachably bolted t.o,the flanges 31 ofthe wings of the next agent unit, In this case bracing or tying members deSignated etO (see Fig. 10) may be detachably connected by bolts passing through the keyhole openings 23 of the several unitsand" the triangular wing memhers- 30 are-detachably connected to the main plate 14; by means of; bolts passing through thekeyhole slots 35. and; through the slots 21 This arrangement of the unit is particularly well,illustrated1 in Fig. 1.0. The lagging strips are ofcoursc connected to the several units by means of the sliding bolts 3.8, as shownin Fig. 8, and reinforcing rods 11 may or may not be used as found neces sary, these, reinforcing rods being disposed inthe seats 25, as illustratedin Fig. 7

In FigslO and 11 I illustrate the manner inwhjiclnthe mold'sections may be arranged ,toform a relatively shallow flat-arched culform an ap- At the ends and. in order to the triangular wings 30 so disposed that'the bolts passing through the slots 35 are at the inner ends of the slots 21. The flanges 31 of the member 30 in this case give a relatively firm support for the bracing members on the ground. It will be understood of course that other bracing members may be attached so as to form downwardly extending abutments of greater length than that shown in Fig. 10 if so desired. If desired also, the bracing rod 10 as previously stated may be attached to the several units so as to hold them in firm position. When the bracing members are in place and the lagging or pallet strips are interlocked with the bracing members, the concrete is to be placed upon the top of the lagging strips and against the end walls formed thereby in the usual manner and, after the concrete is hardened, the bracing strips and the lagging members are removed. In Fig. 12 I show an arrangement of the lagging strips and bracing units which will permit the construction of a circular wall such as the wall of a silo, Water tank, etc. In this case the linking members 26 are arranged in the desired angular -rela-. tion to the edge 15 of the member 1 1 so as to give the proper degreeof curvature and then the end or wing members 30 are bolted in place so as to hold the members 26 at the proper angle to the edge 15 of the member 14. The outer mold for the wall is formed in the same manner but the bracing members are reversed with relationto the bracing members on the inner face of the wall and the bolts which pass through the slots 35 of the wing members 30' are disposed at the extreme outer ends of the strips 31, thus giving a rentrant curvature to the lagging or pallet strips as illustrated clearly in Fig. 12. WhileI have illustrated three adaptations of my molding units to the formation of three different structures, I wish it understood that other structures may be as easily formed and that the units are adapted to many other different uses thanthoseillus trated and described. Inasmuch as thelocking strips or pallet strips are all of one size and the bracing units are also all of one size, it is possible to. combine these units to any desired extent to form structures of widely differing dimensions and the several elements of the bracing unitsmay be changed in their angular relation so as to secure any desired degree of curvature orto make structures which have perfectly straight or fiat faces. a

It will be noted that the links 26 have flanges which are directed in the same direction as the flange on the upper edge of the main member of the bracing unit and that these strips operate upon one. face of this main member while the triangular end members operate on theopposite face of the main member but have flanges extending in the same direction as the flanges on the linking members, these flanges acting to strengthen the end pieces as well as permitting the end pieces to be abutted against each other and fastened to each other.

It is also to be noted that the bracing units composed of the members 1 1, 26 and 30, to-

be the best form of my invention, I do not wish to be limited to the details of the construction as these may be varied in many ways without departing from the spirit of the invention.

Having described my invention, what I claim is:

1. bracing unit for supporting lagging comprising a main member, linking members pivotally connected to the ends of the main member for movement in the same plane as the main member, and end members pivotally connected to the outer ends of the linking members and movable in the same plane, the edges of said end members being formed with flanges whereby the end members of one unit may abut against the end members of the next adjacent unit and be connected thereto, and means whereby the end members and the linking members may be held in a plurality of angular relations to the edges of the main member and to each other. n

2. A bracingunit for supporting lagging comprising a main member having its ends angula'rly cut to provide edges divergent with relationto each and at an angle to the longitudinal edge of the main member, links pivoted to the main member at the extremities of one longitudinal edge of the main member, end members pivoted to the extremities. of the links, and means whereby the end members may be adjustably connected to the main member at a plurality of points to thereby dispose the end members and the links in various angular relations to the longitudinal edges of the main member.

3. A bracing unit for supporting lagging comprising a. main member, linking members permanently pivotally connected thereto for movement in the plane of the main member, and end members pivoted to the ends of the linking members and having such detachable adjustable connection at their outer ends to the main member that they and the linking members may beheld in a plurality of angular relations to the edges of the main member and to each other. 1. A bracingunit for supporting lagging ber s may be adjustabl comprising a. main memberhaving a. flange on one edge, linking members eachv having-a flange on one edge and; pivoted tolthe ends ofithemainmember for swinging. movement in the plane thereof, end: members pivoted to the ends of the linking members and having flanges, and means for adjustably connecting thefree ends. of the end members to the main member at a plurality of points whereby to hold the end members: and linking members in various angular relations to the flange of the main member.

5. A bracing unit for supporting lagging comprising a main member having its ends angularly cut to provide edges at right angles to each other and at angles of45 to the opposite longitudinal edges of the main member, links pivoted to the main member at the-extremities of one longitudinal edge of the main member and; having a length equal to this longitudinal edge,-end members pivoted to'the extremities of the linking members, and means whereby the end memconnected to the maln member at a plurality of points to thereby dispose the end members and the linking members in various angular relations to the longitudinal edges of the main member.

6. A bracing unitfor supporting lagging comprising a main member having. its ends angularly cut to provide edges at right angles to each otherand at angles of 45 to the opposite longitudinal edges of the main member, one of said longitudinal edges of the main member being formed with an angularly extending flange, links pivoted to] the-extremities of said last named longitudinal edge and having flanges along one edge thereof, triangular end members pivoted to the extremities ofthe links and having one edge formed with a flange, and means for adjustably connecting the free ends ofthe triangular end members to the main member at a plurality of'points whereby to adjust the angle of the linking members and end members with relation. to the flanged longitudinaledge of the main member.

7. Means for molding concrete structures comprising a plurality of lagging strips, each strip being formed with a flange and each strip and-flange being cutaway at its edges at a plurality of points, a bracing unit coacting with said strips comprising a main member having its ends angularly cut to provide edgesat right angles to each other and at angles of i5 to the opposite longitudinal edgesv of the main member, one of said longitudinal end members being formed with a longitudinally extending flange of the same length as the Width of a lagging strip, links pivotally connected to the main-member at the ends of said flange for movement in the same plane as the main member, each of sa1d stripsbeing angular in. cross section to provide a flange, approximately triangular ends members each pivoted: at one corner to'the extremity of one ofthelinking members. and each having one edge flanged, means for holding the end members against the face of the main member im a plurality of adjusted positions, and means for interlocking the lagging with the flangesv of the m ain, and linking members.

8. Means for molding concrete structures comprising a plurality of lagging strips, each stripbeing formed with a flange, and each strip, and flange being cut away at its edges at a plurality of points, a bracing unit coactingwith said strips comprising a main member having its ends angularly cut to provide edges at right angles to each other and at angles of 45 to the opposite longitudinal edges of the main member, one of said. longitudinal end members being formed with a longitudinally extending flange of the same length as the width of a lagging strip, links pivotally connected to the main member at the ends of said flange for movement in the same plane as the main member, each of said strips being angular in cross section to provide a flange, approximately triangular end members each pivoted at one corner to the extremity of one of the linking members and each having one edge flanged, means for holding the end members against the face of the main member in a plurality of adjusted positions, and means for interlocking the lagging through the flanges of the main and linking members, said means comprising slidable bolts mounted on the flanges of the lagging, the main and linking members being provided with openings through which said bolts may pass.

9. A bracing-unit for supporting lagging comprising a main member having. parallel side edges and having its. ends angularly formed: to provide edges at right angles to each other and at angles of l5 to the opposite longitudinal edges of the main member, one edge of the main member being laterally flanged and the member being provided adjacent the opposite margin with a central. perforation'and two lateral perforations and with oppositely disposed curved slots, linking members angular in cross section pivoted to the upper corners of the main member and'having a length equal to the adjacent angular side edges of the main member, trii.

be disposed on the flanges of the main and linking members and having means to interlock with said members.

10. Means for molding concrete structures comprising bracing units having upwardly extending ears, each of said ears having a seat formed in its end and adapted to support a reinforcing rod, and lagging strips detachably engaged with the edges of said bracing units below the level of said seats.

11. Means for molding concrete structures comprising a plurality of bracing units composed of sections, the sections having projecting pivoted ears, the ears being formed with reinforcing rod supporting seats, and lagging strips detachably connected to the edge faces of said units below said seats.

12; The combination with a bracing member, of a lagging member disposed upon the bracing member in a plane at right angles to the plane of the bracing member and having a flange disposed at an angle to the plane of the lagging member, said flange being cut away'to fit over the edge of the bracing member, and a slidable bolt on the flange adjacent said cut away portion, the

Copies of this patent may be obtained for five cents bracing member being provided with a passage for the reception of said bolt whereby to detachably hold the lagging member upon the bracing member.

13. A bracing unit for supporting lagging comprising a main member having a flange on one edge, linking members each having a flange on one edge and pivoted to the ends of the main member for swinging movement in the plane thereof, triangular end members pivoted to the ends of the linking members and each having a flange along one edge and extending from the hinged end of the end member toward the free end thereof, and means for adjustably connecting the free ends of the adjustable member with the main member at a plurality of points whereby to hold the end members and linking members in various angular relations to the flange of the main member.

In testimony whereof I hereunto aflix my signature in the presence of two witnesses.

WILLIAM C. FURRY.

Witnesses:

FREDERIG B. WRIGHT, M. R. WILSON.

each, by addressing the Commissioner of Patents,

Washington, D. G. 

